Issue with using NI daq listener for analog output and NI Imaq simultaneously

Hello,

I have a problem with image acquisition using an NI frame grabber while triggering the camera by an NI daq. The daq must run on a continuous loop while the camera captures frames in sync with daq. The problem is when the start(vid) command happens the daq listener no longer works and it stops the continuous signal. Each of the two separately work fine but when both are being called within a loop this error happens. I wonder if you could send any advice on how to fix this issue.

Payam